diff --git a/parts/2/notes.md b/parts/2/notes.md
index 7af2879..66e7f84 100644
--- a/parts/2/notes.md
+++ b/parts/2/notes.md
@@ -12,4 +12,5 @@ Exercises:
 * [X] 2.11
 * [X] 2.12
 * [X] 2.13
-* [X] 2.14
\ No newline at end of file
+* [X] 2.14
+* [X] 2.15
\ No newline at end of file
diff --git a/parts/2/phoneBook/db.json b/parts/2/phoneBook/db.json
index 1f1c491..fb6e7a8 100644
--- a/parts/2/phoneBook/db.json
+++ b/parts/2/phoneBook/db.json
@@ -4,6 +4,11 @@
       "name": "Ada Lovelace",
       "number": "39-44-5323523",
       "id": "2"
+    },
+    {
+      "name": "John",
+      "number": "22222",
+      "id": "John"
     }
   ]
 }
\ No newline at end of file
diff --git a/parts/2/phoneBook/src/App.jsx b/parts/2/phoneBook/src/App.jsx
index 4494124..f007e52 100644
--- a/parts/2/phoneBook/src/App.jsx
+++ b/parts/2/phoneBook/src/App.jsx
@@ -56,7 +56,33 @@ const App = () => {
         return person.name === newName;
       })
     ) {
-      alert(`${newName} is already in the phonebook.`);
+      const wantsToOverWrite = confirm(
+        `${newName} is already in the phonebook. Do you want to overwrite the number?`
+      );
+      if (!wantsToOverWrite) {
+        return;
+      }
+
+      personService
+        .updatePerson(newName, {
+          name: newName,
+          number: newNumber,
+          id: newName,
+        })
+        .then(() => {
+          setTimeout(() => {
+            console.log("postimeout");
+          }, 1000);
+        })
+        .then(() => {
+          return personService.getPersons();
+        })
+        .then((response) => {
+          setPersons(response.data);
+        });
+      
+      setNewName("");
+      setNewNumber("");
       return;
     }
 
@@ -92,7 +118,7 @@ const App = () => {
         .then(() => {
           setTimeout(() => {
             console.log("postimeout");
-          }, 3000);
+          }, 1000);
         })
         .then(() => {
           return personService.getPersons();
diff --git a/parts/2/phoneBook/src/services/personService.js b/parts/2/phoneBook/src/services/personService.js
index 81dce0b..9da0b0c 100644
--- a/parts/2/phoneBook/src/services/personService.js
+++ b/parts/2/phoneBook/src/services/personService.js
@@ -9,5 +9,8 @@ const addPerson = (personData) => {
 const deletePerson = (personId) => {
   return axios.delete(`http://localhost:3001/persons/${personId}`);
 };
+const updatePerson = (personId, personData) => {
+  return axios.put(`http://localhost:3001/persons/${personId}`, personData);
+};
 
-export default { getPersons, addPerson, deletePerson };
+export default { getPersons, addPerson, deletePerson, updatePerson };